ALV crashes in background

[Former Member]

I've made a dynamic table for my alv data using 'cl_alv_table_create=>create_dynamic_table'.

CALL METHOD cl_alv_table_create=>create_dynamic_table
    EXPORTING
      it_fieldcatalog = lt_alv_data
    IMPORTING
      ep_table        = gt_alv_data.

* assign data table to <fs_alv>
  ASSIGN gt_alv_data->* TO <fs_alv>.

I then display the container using set_table_for_first_display. In foreground I'm using a customer container and in background a docking container.

*   Display the ALV Container
  CALL METHOD lo_grid->set_table_for_first_display
    EXPORTING
      it_toolbar_excluding          = lt_fun
      is_layout                     = gs_layout
      is_variant                    = ls_variant
      i_save                        = 'A'
    CHANGING
      it_outtab                     = <fs_alv>
      it_fieldcatalog               = gt_fcat
    EXCEPTIONS
      invalid_parameter_combination = 1
      program_error                 = 2
      too_many_lines                = 3
      OTHERS

This works perfectly in foreground but not in background. The it_outtab used to be a static tabletype. It would then work in background. Only thing I added is the first snippet of code and changed the parameter it_outtab to the fieldsymbol. In the error logs I see a dump getwa_not_assigned. I went into debugger and the <fs_alv> was assigned in background so the error is comming from a different field-symbol. It turns out to be a field symbol used in SAP program SAPLKKBL.

I need this way of working cause I add some columns to the fieldcatalog dynamically and the it_outtab data table needs those columns as well.

Thank you

[former_member226225]

Hi,

Let us use the OFFLINE method of CL_GUI_ALV_GRID class and it will return the E_OFFLINE parameter if it will return zero then should be in foreground execution and if it return non-zero value then it should be executed in BACKGROUND .

See the following code related to it and execute it in background

REPORT ZDYNAMICBACKGROUND. .

*Type pools declaration for ALV

TYPE-POOLS: SLIS. " ALV Global Types

*data declaration for dynamic internal table and alv

DATA: L_STRUCTURE TYPE REF TO DATA,

L_TABLE TYPE REF TO DATA,

STRUC_DESC TYPE REF TO CL_ABAP_STRUCTDESCR,

LT_LAYOUT TYPE SLIS_LAYOUT_ALV,

LS_LVC_FIELDCATALOGUE TYPE LVC_S_FCAT,

LT_LVC_FIELDCATALOGUE TYPE LVC_T_FCAT,

LS_FIELDCATALOGUE TYPE lvc_s_fcat,

LT_FIELDCATALOGUE TYPE lvc_t_fcat.

data : o_cont type ref TO cl_gui_custom_container,

o_dock type REF TO cl_gui_docking_container,

o_grid type ref to cl_gui_alv_grid.

*field symbols declaration

FIELD-SYMBOLS : <IT_TABLE> TYPE STANDARD TABLE,

<DYN_STR> TYPE ANY,

<STR_COMP> TYPE ABAP_COMPDESCR.

*declarations for grid title

DATA : T1(30),

T2(10),

T3(50).

*selection screen declaration for table input

PARAMETERS : P_TABLE LIKE DD02L-TABNAME.

*initialization event

INITIALIZATION.

*start of selection event

START-OF-SELECTION.

call screen 100.

*texts for grid title

T1 = 'Dynamic ALV display for table'.

T2 = P_TABLE.

CONCATENATE T1 T2 INTO T3 SEPARATED BY SPACE.

module STATUS_0100 output.

• Dynamic creation of a structure

CREATE DATA L_STRUCTURE TYPE (P_TABLE).

ASSIGN L_STRUCTURE->* TO <DYN_STR>.

• Fields Structure

STRUC_DESC ?= CL_ABAP_TYPEDESCR=>DESCRIBE_BY_DATA( <DYN_STR> ).

LOOP AT STRUC_DESC->COMPONENTS ASSIGNING <STR_COMP>.

• Build Fieldcatalog

LS_LVC_FIELDCATALOGUE-FIELDNAME = <STR_COMP>-NAME.

LS_LVC_FIELDCATALOGUE-REF_TABLE = P_TABLE.

APPEND LS_LVC_FIELDCATALOGUE TO LT_LVC_FIELDCATALOGUE.

• Build Fieldcatalog

LS_FIELDCATALOGUE-FIELDNAME = <STR_COMP>-NAME.

LS_FIELDCATALOGUE-REF_TABLE = P_TABLE.

APPEND LS_FIELDCATALOGUE TO LT_FIELDCATALOGUE.

ENDLOOP.

• Create internal table dynamic

CALL METHOD CL_ALV_TABLE_CREATE=>CREATE_DYNAMIC_TABLE

EXPORTING

IT_FIELDCATALOG = LT_LVC_FIELDCATALOGUE

IMPORTING

EP_TABLE = L_TABLE.

ASSIGN L_TABLE->* TO <IT_TABLE>.

• Read data from the table selected.

SELECT * FROM (P_TABLE)

INTO CORRESPONDING FIELDS OF TABLE <IT_TABLE>.

• ALV Layout

LT_LAYOUT-ZEBRA = 'X'.

LT_LAYOUT-COLWIDTH_OPTIMIZE = 'X'.

LT_LAYOUT-WINDOW_TITLEBAR = T3.

SET PF-STATUS 'ABC'.

data mode type i.

CALL METHOD cl_gui_alv_grid=>offline

receiving

e_offline = mode.

if mode eq 0.

CREATE OBJECT o_cont

EXPORTING

container_name = 'CST'.

CREATE OBJECT o_grid

EXPORTING

i_parent = o_cont.

CALL METHOD o_grid->set_table_for_first_display

CHANGING

it_outtab = <it_table>

it_fieldcatalog = LT_FIELDCATALOGUE.

else.

CREATE OBJECT o_grid

EXPORTING

i_parent = o_dock.

CALL METHOD o_grid->set_table_for_first_display

CHANGING

it_outtab = <it_table>

it_fieldcatalog = LT_FIELDCATALOGUE.

endif.

endmodule. " STATUS_0100 OUTPUT

module USER_COMMAND_0100 input.

case sy-ucomm.

when 'BACK'.

leave program.

endcase.

endmodule. " USER_COMMAND_0100 INPUT

[Former Member]

raghunadh,

I already use the offline method to create either an istance of docking container or an instance of custom container. So that part is the same for me. Only thing I do differently is I build the fieldcatalog starting from an existing structure. I call LVC_FIELDCATALOG_MERGE and add some extra rows to the output. This then becomes the parameter i pass to cl_alv_table_create=>create_dynamic_table. You on the other hand use RTTC to create the fieldcatalog. Does it work for you in background?

Edited by: Philippe Haesaert on Feb 3, 2012 1:30 PM

[Former Member]

Solved the issue. Turned out I still had a color fieldname bound to my layout. I removed all the coding for colors earlier except this line:

gs_layout-ctab_fname = 'CELLCOLOR'.

Causing the crash...